<template>
	<view>
		
		<!-- 这是自定义搜索组件 -->
		<!-- <my-search bgcolor="#FF0000" radius="12"></my-search> -->
		<my-search @click = "gotoSearch"></my-search>
		<view class="scroll-view-container">
			<!--左侧滑动区域-->
			<scroll-view class="left-scroll-view" scroll-y="y" :style="{height: wh + 'px'}">
				<block v-for="(item,i) in cateList" :key="i">
					<view :class="['left-scroll-view-item', i === active?'active':'']" @click="activeChange(i)">
						{{item.cat_name}}
					</view>
				</block>


			</scroll-view>
			<!--右侧滑动区域-->

			<scroll-view class="right-scroll-view" scroll-y="y" :style="{height:wh + 'px'}" :scroll-top="scrollTop">
				<view class="cate-lv2" v-for="(item2,i2) in cateLevel2" :key="i2">
					<view class="cate-lv2-title">/{{item2.cat_name}}/</view>
					<!--动态渲染三级分类-->
					<view class="cate-lv3-list">
						<view class="cate-lv3-item" v-for="(item3,i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
							<!-- 图片渲染 -->
							<image class="cate-lv3-img" :src="item3.cat_icon.replace('api-ugo-dev','api-ugo-web')"></image>
							<!-- 文本 -->
							<text>{{item3.cat_name}}</text>
						</view>
					</view>
				</view>


			</scroll-view>
		</view>
	</view>
</template>

<script>
	import badgeMix from '@/mixins/tabbar-badge.js'
	export default {
		mixins:[badgeMix],
		data() {
			return {
				//屏幕高度
				wh: 0,
				active: 0,
				//分类列表数据
				cateList: [],
				//二级分类列表数据
				cateLevel2: [],
				//滚动条距离顶部的距离
				scrollTop:0
			};
		},
		onLoad() {
			const sysInfo = uni.getSystemInfoSync()
			this.wh = sysInfo.windowHeight - 50


			//调用分类数据请求
			this.getCateList()
		},

		methods: {

			//发起请求
			async getCateList() {
				const {
					data: res
				} = await uni.$http.get('/api/public/v1/categories')
				if (res.meta.status !== 200) return uni.$showMessage()

				this.cateList = res.message
				this.cateLevel2 = this.cateList[0].children
				console.log(this.cateLevel2)
			},

			activeChange(index) {
				this.active = index
				this.cateLevel2 = this.cateList[index].children
				
				//将scrollTop动态改变
				this.scrollTop = this.scrollTop === 0 ? 1:0 
			},
			
			gotoGoodsList(item3){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?cid=' + item3.cat_id
				})
			},
			
			gotoSearch(){
				uni.navigateTo({
					url:'/subpkg/search/search'
				})
			}

		}
	} 
</script>

<style lang="scss">
	.scroll-view-container {
		display: flex;
		justify-content: space-around;

		.left-scroll-view {
			width: 120rpx;

			.left-scroll-view-item {
				background-color: #F7F7F7;
				line-height: 60px;
				text-align: center;
				font-size: 12px;


				&.active {
					background-color: #FFFFFF;
					position: relative;

					&::before {
						content: ' ';
						display: block;
						width: 3px;
						height: 30px;
						background-color: #C00000;
						position: absolute;
						top: 50%;
						left: 0;
						transform: translateY(-50%);
					}
				}
			}
		}
	
		.right-scroll-view{
			background-color: #FFFFFF;
		}
	}
	
	.cate-lv2-title {
		font-size: 12px;
		text-align: center;
		font-weight: bold;
		padding: 15px 0;
	}
	
	.cate-lv3-list{
		display: flex;
		flex-wrap: wrap;
		.cate-lv3-item{
			width: 33.33%;
			display: flex;
			flex-direction: column;
			justify-content: center;
			align-items: center;
			margin-bottom: 10px;
			
			image{
				width: 60px;
				height: 60px;
			}
			
			text{
				font-size: 12px;
			}
		}
		
		
	}
</style>
